All shows are free to watch (unlike some paid content on Channel 4's 4oD download service), with commercials inserted. As with all major broadcasters offering IPTV, not all shows (and particularly some foreign programmes) are available.

The service displays all programmes in the same 'widescreen-light' 1.77:1 aspect ratio, with no subtitles available. 4oD Catch-up uses the same geo-blocking and Microsoft DRM software as the download service.

According to Cnet.co.uk, 4oD Catch-up is not intended to replace the Windows-only 4oD download player nor its on-demand content supplied via Virgin and other set-top boxes.